Contents
Chapter 1 The DRDA Specification ................................................................ 1
1.1 The DRDA Reference .............................................................................. 2
1.2 The FD:OCA Reference .......................................................................... 2
1.3 The DDM Reference ................................................................................ 3
Chapter 2 Introduction to FD:OCA................................................................. 5
2.1 Why is FD:OCA Needed........................................................................ 5
2.2 What is FD:OCA...................................................................................... 6
2.3 A Scenario ................................................................................................ 7
2.4 How to Use this Book............................................................................. 8
2.4.1 Syntax Diagrams .................................................................................. 8
2.4.2 Notation Conventions ......................................................................... 9
2.4.3 Related Architecture............................................................................ 9
2.4.4 Industry Standards .............................................................................. 9
Chapter 3 Overview of FD:OCA....................................................................... 11
3.1 Concepts ................................................................................................... 11
3.2 Constituents ............................................................................................. 12
3.2.1 Constructs ............................................................................................. 12
3.2.2 Data Types ............................................................................................. 14
3.2.3 Data Arrays ........................................................................................... 14
3.2.4 Definition of Terms .............................................................................. 15
3.2.4.1 Partitions, Dimensions, and Extents .............................................. 15
3.2.4.2 Subarrays............................................................................................ 17
3.3 Characteristics ......................................................................................... 18
3.3.1 Describing Data Arrays and Data Types .......................................... 18
3.3.2 Examples ............................................................................................... 18
Chapter 4 FD:OCA Specifications.................................................................... 27
4.1 Conventions Used in FD:OCA Specifications..................................... 27
4.2 FD:OCA Object Constituents ................................................................ 29
4.3 FD:OCA Descriptor Component Content ........................................... 30
4.3.1 Descriptor Attribute Triplets .............................................................. 30
4.3.1.1 References ........................................................................................... 30
4.3.1.2 Simple Data Array (SDA) ................................................................ 31
4.3.1.3 Row Layout (RLO) or Nullable Row Layout................................ 33
4.3.1.4 Group Data Array (GDA) and Nullable Group Data Array....... 35
4.3.1.5 Metadata Definition (MDD) ............................................................ 36
4.3.2 Supportive General-Purpose Triplets ................................................ 39
4.3.2.1 Continue Preceding Triplet (CPT) .................................................. 39
4.3.2.2 Implementation Support Data (ISD) .............................................. 40
4.3.3 Registry of Data Types ......................................................................... 41
4.3.3.1 String Data Types .............................................................................. 42
4.3.3.2 Character Data Types ........................................................................ 46
4.3.3.3 Numeric Data Types ......................................................................... 53
DRDA, Version 4, Volume 2: Formatted Data Object Content Architecture (FD:OCA) iii
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